CN100422556C - Small displacement high lift reciprocating submersible electric pump - Google Patents

Small displacement high lift reciprocating submersible electric pump Download PDF

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Publication number
CN100422556C
CN100422556C CNB2005100098763A CN200510009876A CN100422556C CN 100422556 C CN100422556 C CN 100422556C CN B2005100098763 A CNB2005100098763 A CN B2005100098763A CN 200510009876 A CN200510009876 A CN 200510009876A CN 100422556 C CN100422556 C CN 100422556C
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CN
China
Prior art keywords
pump
oil
plunger
motor
submersible electric
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Expired - Fee Related
Application number
CNB2005100098763A
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Chinese (zh)
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CN1664368A (en
Inventor
王林
张传绪
王德金
刘遵权
候维前
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Daqing Oilfield Co Ltd
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Daqing Oilfield Co Ltd
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Priority to CNB2005100098763A priority Critical patent/CN100422556C/en
Publication of CN1664368A publication Critical patent/CN1664368A/en
Application granted granted Critical
Publication of CN100422556C publication Critical patent/CN100422556C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The present invention provides a reciprocating oil submersible electric pump with small discharge capacity and high lift, which relates to a reciprocating oil submersible electric pump. In the present invention, the outlet end of a plunger type oil well pump 4 is fixedly connected to the lower end of an oil pipe 1, and the lower end of the plunger type oil well pump 4 is fixedly connected to the upper end of a motor 5; the lower end of a stator 5-2 of the motor 5 is fixedly connected to a centralizer which is fixed in an oil pipe 2 or the upper end of an oil pipe anchor 6; one end of a cable 8 is connected with a wire connecting terminal of the motor 5, and the other end of the cable 8 is connected with a frequency conversion and speed regulation control device 9. Compared with a pump with a rod, the present invention has the advantages of reducing operation cost and well repairing cost and the loss of the oil pipe and a sucker rod because of the rupture, the disengagement and the abrasion of the sucker rod and the abrasion of the oil pipe and reducing parameter regulating and pump replacing work load. Compared with a pump without a rod, the present invention has the advantages of reduced investment of equipment funds, reduced operation cost and maintenance cost, convenient management and reduced extraction cost, and is especially effective to reduce the extraction cost of the extraction of an inclined well and a horizontal well.

Description

A kind of small displacement high lift reciprocating submersible electric pump
Technical field:
The present invention relates to a kind of improvement of oil extraction pump structure, be specifically related to a kind of rodless pumping operation pump.
Background technique:
The most general oil recovery artificial lifting way of China's application at present mainly is to adopt the rod pump artificial lifting way of being made up of pumping unit, oil pipe, sucker rod and oil well pump etc., this oil production method accounts for more than 90% of oil recovery well, yet they have a lot of deficiencys: the one, and pumping unit need become straight line motion to rotatablely moving of motor by medium taches such as retarder, quadratic crank mechanism and sucker rods, and its balance is poor, efficient is low; The 2nd, high material consumption, floor space are greatly, investment is big, cost is high; The 3rd, medium tache is many, idle work is many, energy consumption is higher, and the energy consumption of oil production equipment has accounted for about 1/3 of oil field total energy consumption; The 4th, oil pipe and sucker rod partial wear are serious, and the consumption of pipe bar is serious, upkeep operation workload height; The 5th, it is big that running parameter is adjusted workload; The 6th, to the low well of production fluid amount, inclined shaft and horizontal well bad adaptability.And no bar artificial lifting way such as comparatively ripe at present hydraulic piston pump, electric submersible pump, electric oil submerged screw pump, electrical submersible diaphragm pump, though reduced sapce charge with, stopped side-abrasion of rod string, improved efficient, but cost of investment height, maintenance cost height, problems such as energy consumption height, the artificial lifting way of how selecting to recover the oil becomes the key of falling investment, saving cost, increasing benefit.
Summary of the invention:
The objective of the invention is for solving cost of investment height, the maintenance cost height that existing rodless pump exists, application area is narrower, and the problem of high production fluid, big discharge capacity, low lift oil well provides a kind of small displacement high lift reciprocating submersible electric pump in being only applicable to.The present invention has the advantages that to reduce equipment funds input, minimizing operation and maintenance expenses, convenient management, reduce cost of winning.The present invention comprises oil pipe, sleeve pipe, plunger oil-well pump, motor, centralizer or tubing anchor, well head, cable, frequency changing regulating speed control apparatus; Well head is fixed on the upper end of sleeve pipe, oil pipe is arranged in the sleeve pipe, fixedly connected with the lower end of well head in the upper end of oil pipe, the outlet end of plunger oil-well pump is fixedlyed connected with the lower end of oil pipe, fixedly connected with the upper end of motor in the lower end of plunger oil-well pump, fixedly connected in the centralizer that the lower end of the stator of motor is interior with being fixed on sleeve pipe or the upper end of tubing anchor, one end of cable is connected with the tenminal block of motor, the other end of cable is connected with frequency changing regulating speed control apparatus, and plunger oil-well pump is by standing valve, pump barrel, last travelling valve, following travelling valve, plunger is formed; Last travelling valve and following travelling valve are separately positioned in the plunger, and the sidewall of plunger and pump barrel all has oil inlet hole, and wherein oil pipe is made up of flexible rope and narrow tube.The present invention is combined as a whole motor and plunger oil-well pump, utilizes linear electric motor or through slowing down and the be in line plunger to-and-fro motion of electric rotating machine direct drive plunger formula oil well pump in the down-hole of motion of commutation, finishes suction.The present invention compares its advantage with rod pump: both can save equipment funds inputs such as pumping unit, can reduce again because operation, workover cost and the oil pipe that sucker rod disconnected takes off, wearing and tearing and oil pipe wearing and tearing cause, the loss of sucker rod, and can reduce the workload of transferring ginseng and changing pump; Particularly, the present invention adopts and be provided with flexible rope outside narrow tube, has not only increased pulling force, and under little discharge capacity, high-lift condition, can further reduce equipment cost, alleviates weight of equipment, and the fluid migration velocity is fast.The present invention compares its advantage with existing rodless pump: minimizing equipment funds input, minimizing operation and maintenance expenses, convenient management, reduction cost of winning, and especially more effective for the exploitation reduction cost of winning of inclined shaft, horizontal well.
Description of drawings:
Fig. 1 is an overall structure schematic representation of the present invention, Fig. 2 is the structural representation of embodiment three, Fig. 3 is the structural representation of flexible rope 11-1 and narrow tube 11-2 in the embodiment three, and Fig. 4 is the structural representation of flexible rope 11-1 and narrow tube 11-2 in the embodiment four.
Embodiment:
Embodiment one: (referring to Fig. 1) present embodiment is made up of oil pipe 1, sleeve pipe 2, plunger oil-well pump 4, motor 5, centralizer or tubing anchor 6, well head 7, cable 8, frequency changing regulating speed control apparatus 9; Well head 7 is fixed on the upper end of sleeve pipe 2, oil pipe 1 is arranged in the sleeve pipe 2, fixedly connected with the lower end of well head 7 in the upper end of oil pipe 1, the outlet end of plunger oil-well pump 4 is fixedlyed connected with the lower end of oil pipe 1, the upper end of the lower end of plunger oil-well pump 4 and motor 5 is fixedly linked, the lower end of the stator 5-2 of motor 5 be fixed on sleeve pipe 2 in centralizer or the upper end of tubing anchor 6 fixedly connected, one end of cable 8 is connected with the tenminal block of motor 5, and the other end of cable 8 is connected with frequency changing regulating speed control apparatus 9.Plunger oil-well pump 4 is made up of standing valve 4-1, pump barrel 4-2, last travelling valve 4-3, following travelling valve 4-4, plunger 4-5; Standing valve 4-1 is fixed on the top in the pump barrel 4-2, plunger 4-5 is arranged on the downside of pump barrel 4-2 internal fixation valve 4-1, last travelling valve 4-3 and following travelling valve 4-4 are separately positioned in the plunger 4-5, fixedly connected with the upper end of the mover 5-1 of motor 5 in the lower end of plunger 4-5, the downside of plunger 4-5 has oil inlet hole 4-6, fixedly connected with the upper end of the stator 5-2 of motor 5 in the lower end of pump barrel 4-2, the downside of pump barrel 4-2 has pump oil inlet hole 4-7.The top of the pump barrel 4-2 of the plunger oil-well pump 4 of present embodiment is fixed with a standing valve 4-1, and this standing valve 4-1 has only when pressing down greater than last pressure and could open, and oppositely pressure reduction is then closed.In pump barrel 4-2, be provided with a plunger 4-5, be respectively equipped with one in the plunger 4-5 and go up travelling valve 4-3 and following travelling valve 4-4, the upper and lower valve that moves about moves in pump barrel 4-2 with plunger 4-5, and the upper and lower valve that moves about also has only when pressing down greater than last pressure and could open, and oppositely pressure reduction is then closed.Motor 5 can be linear electric motor or through slowing down and the be in line electric rotating machine of motion of commutation, the linear electric motor electric mover can be directly or the plunger by extension bar and oil well pump join; Then through after deceleration and the commutation, the push rod of institute's linear movement output links to each other with oil pump plunger piston electric rotating machine.After the motor stator 5-2 energising, drive mover 5-1 or push rod and move up and down like this, thereby the plunger that drives oil well pump moves up and down in pump barrel, finishes suction.
Embodiment two: the difference of (referring to Fig. 1) present embodiment and embodiment one is at oil pipe 1 internal fixation oil drainer 3 is arranged.Other composition is identical with embodiment one with annexation.The effect of oil drainer 3 is exactly when the secondary construction operation, drop-in tool is opened the passage of oil drainer, the annular space of oil pipe and sleeve pipe is communicated with, replace into clear water or for lifting liquid by oil pipe, make the interior fluid of oil pipe when operation, enter the annular space of oil pipe and sleeve pipe, thereby do not take greasy dirt to ground, realize the safety and environmental protection construction.
Embodiment three: the difference of (referring to Fig. 2, Fig. 3) present embodiment and embodiment one is that oil pipe 1 is replaced by flexible rope 11-1 and narrow tube 11-2.Narrow tube 11-2 is arranged in the flexible rope 11-1, fixedlys connected with the lower end of well head 7 in the upper end of flexible rope 11-1 and narrow tube 11-2, fixedlys connected with the upper end of plunger oil-well pump 4 in the lower end of flexible rope 11-1 and narrow tube 11-2.Flexible rope 11-1 is wire rope or chain cable.The bore of narrow tube 11-2 is 20-50mm.Narrow tube 11-2 is made by steel, iron, aluminum alloy or plastics.Other composition is identical with embodiment one with annexation.
Embodiment four: the difference of (referring to Fig. 4) present embodiment and embodiment three is that flexible rope 11-1 and narrow tube 11-2 vertically be arranged in parallel mutually.Other composition is identical with embodiment three with annexation.
Above-mentioned embodiment three and embodiment four-function flexible rope 11-1 and narrow tube 11-2 have replaced oil pipe 1, under little discharge capacity, high-lift condition, can further reduce equipment cost, alleviate weight of equipment, and the fluid migration velocity is fast.Because the pulling force of narrow tube is limited, is provided with flexible rope outside narrow tube, to increase pulling force.

Claims (8)

1. small displacement high lift reciprocating submersible electric pump, it comprises oil pipe (1), sleeve pipe (2), plunger oil-well pump (4), motor (5), centralizer or tubing anchor (6), well head (7), cable (8), frequency changing regulating speed control apparatus (9); Well head (7) is fixed on the upper end of sleeve pipe (2), oil pipe (1) is arranged in the sleeve pipe (2), fixedly connected with the lower end of well head (7) in the upper end of oil pipe (1), the outlet end that it is characterized in that plunger oil-well pump (4) is fixedlyed connected with the lower end of oil pipe (1), the upper end of the lower end of plunger oil-well pump (4) and motor (5) is fixedly linked, fixedly connected in the centralizer that the lower end of the stator (5-2) of motor (5) is interior with being fixed on sleeve pipe (2) or the upper end of tubing anchor (6), one end of cable (8) is connected with the tenminal block of motor (5), the other end of cable (8) is connected with frequency changing regulating speed control apparatus (9), and plunger oil-well pump (4) is by standing valve (4-1), pump barrel (4-2), last travelling valve (4-3), following travelling valve (4-4), plunger (4-5) is formed; Last travelling valve (4-3) and following travelling valve (4-4) are separately positioned in the plunger (4-5), the sidewall of plunger (4-5) and pump barrel (4-2) all has oil inlet hole (4-6,4-7), wherein oil pipe (1) is made up of flexible rope (11-1) and narrow tube (11-2).
2. a kind of small displacement high lift reciprocating submersible electric pump according to claim 1, it is characterized in that standing valve (4-1) is fixed on the top in the pump barrel (4-2), plunger (4-5) is arranged on the downside of pump barrel (4-2) internal fixation valve (4-1), fixedly connected with the upper end of the mover (5-1) of motor (5) in the lower end of plunger (4-5), fixedly connected with the upper end of the stator (5-3) of motor (5) in the lower end of pump barrel (4-2), the downside of pump barrel (4-2) has pump oil inlet hole (4-7).
3. a kind of small displacement high lift reciprocating submersible electric pump according to claim 1 and 2 is characterized in that having at oil pipe (1) internal fixation and rushes down oily device (3).
4. a kind of small displacement high lift reciprocating submersible electric pump according to claim 1 is characterized in that flexible rope (11-1) is wire rope or chain cable.
5. a kind of small displacement high lift reciprocating submersible electric pump according to claim 1, the bore that it is characterized in that narrow tube (11-2) is 20-50mm.
6. a kind of small displacement high lift reciprocating submersible electric pump according to claim 1 is characterized in that narrow tube (11-2) made by steel, iron, aluminum alloy or plastics.
7. a kind of small displacement high lift reciprocating submersible electric pump according to claim 1 is characterized in that narrow tube (11-2) is arranged in the flexible rope (11-1).
8. a kind of small displacement high lift reciprocating submersible electric pump according to claim 1 is characterized in that flexible rope (11-1) and narrow tube (11-2) vertically be arranged in parallel mutually.
CNB2005100098763A 2005-04-05 2005-04-05 Small displacement high lift reciprocating submersible electric pump Expired - Fee Related CN100422556C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNB2005100098763A CN100422556C (en) 2005-04-05 2005-04-05 Small displacement high lift reciprocating submersible electric pump

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Application Number Priority Date Filing Date Title
CNB2005100098763A CN100422556C (en) 2005-04-05 2005-04-05 Small displacement high lift reciprocating submersible electric pump

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CN100422556C true CN100422556C (en) 2008-10-01

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Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1719032A (en) * 2005-07-22 2006-01-11 王善政 Steel wire cable type electro immersion permanent magnet linear reciprocating pump
CN102312664A (en) * 2011-01-10 2012-01-11 郑艳 Numerical-control intelligent oil extractor system
CN102345589A (en) * 2011-10-25 2012-02-08 崔建忠 Dual-track and dual-acting oil extraction device
CN103775033B (en) * 2013-04-03 2017-02-08 中国石油天然气股份有限公司 Immovable string lifting-up and putting-down linear motor drive electric submersible pump and method thereof
CN104747126B (en) * 2013-12-30 2018-08-14 王颖 U-tube individual well fluid power self-loopa oil production method and corollary apparatus
CN106996274B (en) * 2017-05-05 2019-01-08 西南石油大学 A kind of righting structure of anti-sucker rod pumping pump plunger eccentric wear
CN113123950A (en) * 2019-12-31 2021-07-16 中国石油天然气股份有限公司 Submersible electric plunger pump

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2538975Y (en) * 2002-03-28 2003-03-05 郭孝平 Direct driving oil-well pump
CN2677607Y (en) * 2003-12-19 2005-02-09 胡秀忠 Oil production device with energy-saving submersible electric pump driven by cylindrical rare earth permanent-magnet linear electric machine
CN1587708A (en) * 2004-09-20 2005-03-02 中国石化集团河南石油勘探局机械制造厂 Plunger type oil pump driven by linear motor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2538975Y (en) * 2002-03-28 2003-03-05 郭孝平 Direct driving oil-well pump
CN2677607Y (en) * 2003-12-19 2005-02-09 胡秀忠 Oil production device with energy-saving submersible electric pump driven by cylindrical rare earth permanent-magnet linear electric machine
CN1587708A (en) * 2004-09-20 2005-03-02 中国石化集团河南石油勘探局机械制造厂 Plunger type oil pump driven by linear motor

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